Small aperture lighting device

Abstract

A lighting device assembly includes a light source and an optic attached to a first heat sink member, a second heat sink member connected in thermal communication with the first heat sink member, and an aperture member connected to the second heat sink member. The aperture member has an inner surface having steps surrounding a light exit opening to reduce a thickness dimension. The edge of the light exit opening is angled radially outward toward its light exit side. A third heat sink member is connected in thermal communication with the second heat sink member, and has a plurality of openings to receive one or more plaster materials. The third heat sink member has a first region and a second region at least partially surrounding the first region, the second region has a reduced heat conduction capability relative to the first region, to inhibit a transfer of heat to the outer perimeter of the body of the further heat sink member.

What is claimed is: 
     
       1. A lighting device assembly comprising:
 a first heat sink member; 
 a light source attached to the first heat sink member; 
 at least one further heat sink member supported by the first heat sink member, the at least one further heat sink member including a further heat sink member comprising a generally plate-shaped body having an outer perimeter and a plurality of openings configured to receive one or more materials consisting of plaster, joint compound, spackling, drywall mud, gypsum-based paste, paste or putty; 
 the body of the further heat sink member having a first region and a second region, the second region at least partially surrounding the first region, the second region of the body of the further heat sink having a reduced heat conduction capability relative to the first region of the further heat sink, to at least partially inhibit a transfer of heat to the outer perimeter of the body of the further heat sink member. 
 
     
     
       2. The lighting device assembly of  claim 1 , wherein the plurality of openings include a first plurality of openings in the first region of the further heat sink member, and a second plurality of openings in the second region of the body of the further heat sink member, the second plurality of openings having sizes, shapes, arrangements or combinations thereof configured to provide the second region with reduced heat conduction qualities relative to the first region of the body of the further heat sink member. 
     
     
       3. The lighting device assembly of  claim 2 , wherein the first plurality of openings comprise openings that have a first size, the second plurality of openings comprise openings that have a second size, and the second size is larger than the first size. 
     
     
       4. The lighting device assembly of  claim 2 , wherein the first plurality of openings comprise openings that have a first shape, the second plurality of openings comprise openings that have a second shape, and the second shape is different than the first shape. 
     
     
       5. The lighting device assembly of  claim 2 , wherein the first plurality of openings comprise openings that are arranged in a first array, the second plurality of openings comprise openings that are arranged in a second array, and the second array has a different pattern than the first array. 
     
     
       6. The lighting device assembly of  claim 5 , wherein the first array comprises the openings arranged in a plurality of radial lines or spokes extending from a central opening in the further heat sink member, and wherein the radial lines or spokes define radial heat transfer paths between adjacent pairs of radial lines of openings. 
     
     
       7. The lighting device assembly of  claim 6 , wherein each of the radial lines or spokes extend radially outward in a curve or spiral shape. 
     
     
       8. The lighting device assembly of  claim 1 , wherein the first heat sink member is configured to receive heat generated by the light source and wherein the further heat sink member is arranged in thermal communication with the first heat sink member to receive and dissipate some of the heat received by the first heat sink member. 
     
     
       9. The lighting device assembly of  claim 1 , wherein the first heat sink member comprises a generally solid, unitary body of metal having a recess or cavity defining an interior volume, wherein the light source is located within the interior volume. 
     
     
       10. The lighting device assembly of  claim 1 , wherein the at least one further heat sink member includes said further heat sink member and a second heat sink member, wherein the second heat sink member is located between the first heat sink member and the further heat sink member, wherein the second heat sink member is in thermal engagement with the first heat sink member, and wherein the further heat sink member is in thermal engagement with the second heat sink member. 
     
     
       11. The lighting device assembly of  claim 10 , wherein the first heat sink member has an opening arranged to pass light from the light source, and wherein the second heat sink member has yoke section that engages and threads with a threaded edge of the opening in first heat sink member, to connect the second heat sink member to the first heat sink member. 
     
     
       12. The lighting device assembly of  claim 1 , further comprising an optic member having a light entry side and a light exit side, the optic member being supported by the first heat sink member with the light entry side in a position to receive light from the light source, the optic member being configured to emit the light from the exit side. 
     
     
       13. The lighting device assembly of  claim 12 , further comprising an aperture member having a light passage aperture, the aperture member being connected to the second heat sink member in a position to align the light passage aperture to receive and pass light from the light exit side of the optic member. 
     
     
       14. The lighting device assembly of  claim 13 , wherein the aperture member comprises a body having first and second openings through which the light may pass, the first opening being on a side of the body facing the optic member, wherein the second opening is on a side of the body facing an opposite direction as the side having the large opening, wherein the second opening is smaller than the first opening, and wherein the body of the aperture member has a curved or angled inner surface between the first and the second openings, the angled or curved surface having a plurality of steps surrounding the second opening to reduce a thickness dimension of the body of the aperture member adjacent the edge of the second opening. 
     
     
       15. The lighting device assembly of  claim 14 , wherein the edge of the second opening is curved or angled radially outward toward a light exit side of the second opening. 
     
     
       16. A lighting device assembly comprising:
 a first heat sink member; 
 a light source attached to the first heat sink member; 
 an optic member having a light entry side and a light exit side, the optic member being supported by the first heat sink member with the light entry side in a position to receive light from the light source, the optic member being configured to emit the light from the light exit side; 
 a second heat sink member connected to and in thermal communication with the first heat sink member, the second heat sink member having an opening; 
 an aperture member having a light passage aperture, the aperture member being connected to the second heat sink member in a position to align the light passage aperture to receive and pass light from the light exit side of the optic member; 
 wherein the aperture member comprises a body having first and second openings through which the light may pass, the first opening being on a side of the body facing the optic member, wherein the second opening is on a side of the body facing an opposite direction as the side having the large opening, wherein the second opening is smaller than the first opening, and wherein the body of the aperture member has a curved or angled inner surface between the first and the second openings, the angled or curved surface having a plurality of steps surrounding the second opening to reduce a thickness dimension of the body of the aperture member adjacent the edge of the second opening. 
 
     
     
       17. The lighting device assembly of  claim 16 , wherein the edge of the second opening is curved or angled radially outward toward a light exit side of the second opening. 
     
     
       18. The lighting device assembly of  claim 16 , further comprising a third heat sink member connected to and in thermal communication with the second heat sink member, the third heat sink member comprising a generally plate-shaped body having an outer perimeter and a plurality of openings configured to receive one or more materials consisting of plaster, joint compound, spackling, drywall mud, gypsum-based paste, paste or putty. 
     
     
       19. The lighting device assembly of  claim 18 , wherein the body of the third heat sink member has a first region and a second region, the second region at least partially surrounding the first region, the second region of the body of the further heat sink having a reduced heat conduction capability relative to the first region of the further heat sink, to at least partially inhibit a transfer of heat to the outer perimeter of the body of the further heat sink member. 
     
     
       20. The lighting device assembly of  claim 19 , wherein the plurality of openings include a first plurality of openings in the first region of the third heat sink member, and a second plurality of openings in the second region of the body of the third heat sink member, the second plurality of openings having sizes, shapes, arrangements or combinations thereof configured to provide the second region with reduced heat conduction qualities relative to the first region of the body of the third heat sink member.